38845817009 has 4 divisors (see below), whose sum is σ = 38847297060. Its totient is φ = 38844336960.

The previous prime is 38845816987. The next prime is 38845817011. The reversal of 38845817009 is 90071854883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34189119409 + 4656697600 = 184903^2 + 68240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38845817009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38845817099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699932 + ... + 753389.

It is an arithmetic number, because the mean of its divisors is an integer number (9711824265).

Almost surely, 2^38845817009 is an apocalyptic number.

It is an amenable number.

38845817009 is a deficient number, since it is larger than the sum of its proper divisors (1480051).

38845817009 is a wasteful number, since it uses less digits than its factorization.

38845817009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480050.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 38845817009 in words is "thirty-eight billion, eight hundred forty-five million, eight hundred seventeen thousand, nine".